Jamo C601 Compact Speaker (Single, Black) Single award winning 2-way bookshelf speaker Equipped with one 4" woofer and one 1" DTT (Decoupled Tweeter Technology) tweeter Fully equipped for optional bi-wiring Frequency Range: 65 - 20,000Hz Can be placed on a floor stand, on a bookshelf or mounted directly on the wall on its wall-brackets